I was planning on getting the one Dean recommended, I even looked them up at harbor freight before you guys posted. I stopped at Sears first to see if they had any sales and got talked into this:
http://www.sears.com/shc/s/p_10153_1...+impact+wrench
They gave me 40 off, so I only paid 199. 20v lithium ion with 300ft lb! Discount put my wheels on with the impact last, and I just had NO problem spinning them off with this bad boy.